<?php

class AlternativaController extends Controller
{
	/**
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 * using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
	public $layout='//layouts/column2';

	/**
	 * @return array action filters
	 */
	public function filters()
	{
		return array(
			'accessControl', // perform access control for CRUD operations
		);
	}

	/**
	 * Specifies the access control rules.
	 * This method is used by the 'accessControl' filter.
	 * @return array access control rules
	 */
	public function accessRules()
	{
		return array(
                    array(
                        'allow',
                        'actions'=>array('index','create','update','admin','delete'),
                        'expression'=>'Yii::app()->user->isAdmin',
                    ),
                    array(
                        'deny',
                        'users'=>array('*'),
                    ),
		);
	}

	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'admin' page.
	 */
	public function actionCreate($id_questao)
	{
		$model=new Alternativa;
                $model->id_questao = $id_questao;
                
                $questao=Questao::model()->findByPk($id_questao);
                $questionario=Questionario::model()->findByPk($questao->id_questionario);
                
		$this->performAjaxValidation($model);

		if(isset($_POST['Alternativa']))
		{
			$model->attributes=$_POST['Alternativa'];
			if($model->save())
				$this->redirect(array('admin','id_questao'=>$id_questao));
		}

		$this->render('create',array(
                    'model'=>$model,
                    'questao'=>$questao,
                    'questionario'=>$questionario,
		));
	}

	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id_questao,$a)
	{
		$model=$this->loadModel($a);
                
                $questao=Questao::model()->findByPk($id_questao);
                $questionario=Questionario::model()->findByPk($questao->id_questionario);

		$this->performAjaxValidation($model);

		if(isset($_POST['Alternativa']))
		{
			$model->attributes=$_POST['Alternativa'];
			if($model->save())
				$this->redirect(array('admin','id_questao'=>$id_questao));
		}

		$this->render('update',array(
                    'model'=>$model,
                    'questao'=>$questao,
                    'questionario'=>$questionario,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id_questao,$a)
	{
		if(Yii::app()->request->isPostRequest)
		{
			// we only allow deletion via POST request
			$this->loadModel($a)->delete();

			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			if(!isset($_GET['ajax']))
				$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
		}
		else
			throw new CHttpException(400,'Requisição inválida!');
	}

	/**
	 * Manages all models.
	 */
	public function actionAdmin($id_questao)
	{
		$model=new Alternativa('search');
		$model->unsetAttributes();  // clear any default values
                $model->id_questao = $id_questao;

                $questao=Questao::model()->findByPk($id_questao);
                $questionario=Questionario::model()->findByPk($questao->id_questionario);

                if(isset($_GET['Alternativa']))
			$model->attributes=$_GET['Alternativa'];

		$this->render('admin',array(
                    'model'=>$model,
                    'questao'=>$questao,
                    'questionario'=>$questionario,
		));
	}

	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer the ID of the model to be loaded
	 */
	public function loadModel($id)
	{
		$model=Alternativa::model()->findByPk($id);
		if($model===null)
			throw new CHttpException(404,'Esta página não existe.');
		return $model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param CModel the model to be validated
	 */
	protected function performAjaxValidation($model)
	{
		if(isset($_POST['ajax']) && $_POST['ajax']==='alternativa-form')
		{
			echo CActiveForm::validate($model);
			Yii::app()->end();
		}
	}
}
